AMD Radeon R9 380X vs AMD Radeon R9 390 X2

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 380X and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 380X 's Advantages

Lower TDP (190W vs 580W)

AMD Radeon R9 390 X2 's Advantages

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (345.6GB/s vs 182.4GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 380X

3.973 TFLOPS

Radeon R9 390 X2 +28%

5.12 TFLOPS

Radeon R9 380X

VS

Radeon R9 390 X2

Graphics Card

Nov 2015

Release Date

Sep 2015

Pirate Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1425 MHz

Memory Clock

1350 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

182.4GB/s

Bandwidth

345.6GB/s

Render Config

-

SM Count

-

32

Compute Units

40

2048

Shading Units

2560

128

TMUs

160

32

ROPs

64

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

Theoretical Performance

31.04 GPixel/s

Pixel Rate

64.00 GPixel/s

124.2 GTexel/s

Texture Rate

160.0 GTexel/s

3.973 TFLOPS

FP16 (half)

-

3.973 TFLOPS

FP32 (float)

5.120 TFLOPS

248.3 GFLOPS

FP64 (double)

640.0 GFLOPS

Graphics Processor

Antigua

GPU Name

Grenada

Antigua XT (215-0877016)

GPU Variant

Grenada PRO (215-0880030)

GCN 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

6.2 billion

366 mm²

Die Size

438 mm²

Board Design

190W

TDP

580W

450 W

Suggested PSU

950 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

2x 6-pin

Power Connectors

4x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

6.3

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